ANSWER Bud, Your test is incorrect. The primary winding(across the black and blue/white wires) should read less than 1 ohm resistance. The filament winding(across bot red wires to the magnetron) should read less than 1 ohm resistance. and the red wire from the capacitor to the ground wire on the transformer should have approx. 80 ohms resistance. You were testing across two different windings and would have an improper resistance reading. Also check each terminal the chassis ground for a shorted winding as well. Thanks